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10 joints of the can to first coat the surfaces of a UNIT D STATES Parent Unmet;

WILLIAM ROSENBERG, OF NEW YORK, N. Yf

LACQUER FOR USE IN SOLDERiNG.

SPECIFICATION fon'ning part of Letters Patent No. 319,128, dated June 2, 1885.

Application filed April 1, 1885.

To all whom it may concern.-

Be it known that I, WILLIAM ROSENBERG, of New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Lacquers for Use in Soldering, of which the following is a specification. v

In the manufacture of metal cans for containing edibles it is customary in soldering the the metal where the joints are formed with muriatic acid in order to furnish better holding-surfaces for the solder. lhe use of acid is objeotionable,because it often impregnates the contents of the can and renders it unwholesome. It is the object of my improvement to obviate this difficulty.

To this end my improvement consists in a lacquer for soldering the joints of metal cans, made of kauri gum, rosin, and alcohol, which lacquer is to be applied to the can previous to the application of the solder. Cans so sol dered will not impart a disagreeable taste to the contents, neither will they be in any way detrimental to the same.

Instead of using alcohol alone in combination with the gum and rosin, I may use a mix- (No specimens.)

benzine.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A lacquer to be used in soldering, consisting of kauri gum, rosin, and alcohol, substantially as specified.

2. A lacquer to be used in soldering, consisting of kauri gum, rosin, alcohol, and benzine, substantially as specified.

WILLIAM ROSENBERG.

Witnesses:

J. J. FROUTS, EDWIN D. KALIsu.

(15) gallons of alcohol to five (5) gallons of 0 

